how to fix P0174 code in Volkswagen Golf Seventh Generation (2013-2020)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Inspect and Repair Air Intake System

• Sub-steps:

  1. Remove the air intake duct and inspect for cracks or damage. Replace as necessary.
  2. Ensure all clamps and connections are secure.
  3. Clean the MAF sensor using MAF cleaner if it appears contaminated.

• Tools Required: Screwdrivers, MAF cleaner, replacement air intake duct (if needed)

3. Repair Vacuum Leaks

• Sub-steps:

  1. Use a smoke machine to detect any vacuum leaks in the intake manifold and associated hoses.
  2. Replace any damaged vacuum hoses or gaskets identified during the inspection.

• Tools Required: Smoke machine, replacement hoses or gaskets as needed

4. Check and Repair Fuel System

• Sub-steps:

  1. If fuel pressure is low, inspect and replace the fuel pump or fuel filter as needed.
  2. Check the fuel injectors for proper function and clean or replace them if they are clogged.

• Tools Required: Fuel pressure gauge, injectors cleaning kit, replacement fuel filter/pump (if needed)

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0174 code and any related codes.